What Is an Active Matrix Liquid Crystal Display?
Active matrix, that is, Active Matrix. An LCD technology that uses TFT (Thin Film Transistor) memory elements to create individual active pixels. Active matrix allows full motion video and animation, unlike passive matrix. Color also has more vibration than a passive matrix. There are two types of active matrix technology: AmorphousTFT (amorphous TFT) and PolysiliconTFT (multi-silicon TFT).
Active matrix
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- Chinese name
- Active matrix
- Foreign name
- Active Matrix
- Active matrix, that is, Active Matrix. An LCD technology that uses TFT (Thin Film Transistor) memory elements to create individual active pixels. Active matrix allows full motion video and animation, unlike passive matrix. Color also has more vibration than a passive matrix. There are two types of active matrix technology: AmorphousTFT (amorphous TFT) and PolysiliconTFT (multi-silicon TFT).
- Active matrix liquid crystal panels are formed by wiring and arranging electrodes along the X-axis direction and the Y-axis direction to form a screen, and then installing active (active) switching elements at their intersections. This panel is provided with a diode or a transistor for each pixel. When the switch is turned on, a driving voltage that can obtain a specified brightness is transmitted to the liquid crystal cell. When the switch is turned off, it can cut off irrelevant signals, which can greatly reduce crosstalk. Although the manufacturing process and structure of the active-matrix liquid crystal panel are more complicated than that of the passive-matrix liquid crystal panel, a combination of active elements with excellent switching characteristics and liquid crystals of TN, IPS, and VA modes can be used to obtain a large number of pixels Fine image. It can realize the high-resolution large-screen display that CRT cannot achieve. At present, most of the color LCD panels used in personal computer monitors, LCD TVs, and mobile phones are of active matrix type. Active devices are divided into three-terminal thin film transistors (TFT: Thin Film Transistor) and two-terminal thin film diodes (TFD: Thin Film Diode) formed on a glass substrate. Currently, most panels use TFTs. The silicon layer and the insulating film forming the transistor can be formed on a glass substrate using a technique such as plasma CVD (Plasma Chemical Vapor Deposition). The TFT liquid crystal panel adopts a driving method using a thin film transistor as an active element.